Super metal-rich clusters G 158 and G 177 in M 31 - Clues on the inner bulge/disc transition

Details Super metal-rich clusters G 158 and G 177 in M 31 - Clues on the inner bulge/disc transition Super metal-rich clusters G 158 and G 177 in M 31 - Clues on the inner bulge/disc transition

Jul 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26a...260..109b&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 260, no. 1-2, p. 109-111.

Astronomy and Astrophysics

Astrophysics

10

Andromeda Galaxy, Galactic Bulge, Galactic Clusters, Metallicity, Galactic Structure, Globular Clusters, Stellar Spectra

Scientific paper

A blanketing excess observed in G 177 with respect to G 158 is discussed. The stronger blue-violet blanketing of G 177, exacerbated in the difference spectrum (G 177 - G 158), is similar to that of 47 Tuc relative to its spectral model built from solar neighborhood disk stars. It is suggested that the (O/Fe) anomaly of metal-poor halo giants persists in bulge objects. In this scenario G 177 would be an inner bulge star cluster and G 158 an inner disk one in M 31.

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